Edit plugin settings. All plugin settings are stored in config.ini, so you can add a new section to trac.ini or go to trac-instance/admin/teamcity/builds and fill the web-form. Settings:

[teamcity]base_url=http://<your_ci_server>:<port> # base url to TC server, WITHOUT trailing slashusername=trac password=trac1 # TC credentials which plugin will use to access TC servercache_dir=/tmp/teamcity_cache # Plugin will cache here build logs from Teamcitybuilds=bt1,bt2 # A list of buildTypeId from TC to followlimit=10080 # Number of minutes for timeline
# Plugin will add events to timeline for builds which are newer than now()-limit

All of the described settings can be added to trac.ini directly or enabled via the admin interface.